Freemelt granted patents for powder removal method in the US and Europe

June 28, 2022

Images from Freemelt’s patent demonstrating its method of powder removal for complex parts (Courtesy Freemelt/United States Patent and Trademark Office/European Patent Office)
Images from Freemelt’s patent demonstrating its method of powder removal for complex parts (Courtesy Freemelt/United States Patent and Trademark Office/European Patent Office)

Freemelt, Mölndal, Sweden, has been granted patents in the US and Europe relating to a method of removing powder from additively manufactured parts, which it is said will enable users to produce more complex parts.

In Freemelt’s Additive Manufacturing machines, the build process takes place at elevated temperature to increase productivity and improve material properties. This means that powder grains in areas inside the manufactured part are sometimes stuck after manufacturing. The patents provide protection regarding a method of removing the powder stuck in, for example, cooling channels and other confined spaces.

“This innovation increases the opportunities to use 3D printing technology in more application areas and can increase the competitiveness of our customers,” stated Ulric Ljungblad, co-founder and CEO of Freemelt. “Examples of this are heat exchangers that often have a lot of cavities that are difficult to access.”

The patents are granted in the US and Europe and are validated in Sweden, Germany, and the UK. Protection for this extends until March 26, 2039, in all jurisdictions.

“Frost shattering is a force of nature that can grind down mountains, here we use the same simple principle to enable the cleaning of powders from complex details,” added Robin Stephansen co-founder of Freemelt and inventor of this patent.

The patents can be viewed here:

United States Patent and Trademark Office (USPTO): Freezing method for cleaning an additive manufacturing part

European Patent Office (EPO): Freezing method for cleaning an additive manufacturing part

www.freemelt.com

Images from Freemelt’s patent demonstrating its method of powder removal for complex parts (Courtesy Freemelt/United States Patent and Trademark Office/European Patent Office)

In the latest issue of Metal AM magazine

Download PDF
 

Extensive AM industry news coverage, as well as the following exclusive deep-dive articles:

  • Transforming access to medical implants with PrinterPrezz
  • Lessons from 2021’s Olympic bike crash
  • Xerox liquid metal AM
  • Additive Manufacturing for oil, gas and maritime
  • Multi-material metal parts by Powder Bed Fusion
  • Findings from Wohlers Report 2022
  • The challenge of grain size: X-ray powder diffraction analysis of parts made by metal AM

The world of metal AM to your inbox

Don't miss any new issue of Metal AM magazine, and get the latest industry news. Sign up to our twice weekly newsletter.

Sign up

News from the industry…

    News from the industry…

    Discover our magazine archive…

    The free to access Metal Additive Manufacturing magazine archive offers unparalleled insight into the world of metal Additive Manufacturing from a commercial and technological perspective through:

    • Reports on visits to leading metal AM part manufacturers and industry suppliers
    • Articles on technology and application trends
    • Information on materials developments
    • Reviews of key technical presentations from the international conference circuit
    • International industry news

    All past issues are available to download as free PDFs or view in your browser.

    Browse the archive

    qweqw

    Looking for AM machines, metal powders or part manufacturing services?

    Discover suppliers of these and more in our comprehensive advertisers’ index and buyer’s guide, available in the back of Metal AM magazine.

    • AM machines
    • Process monitoring & calibration
    • Heat treatment & sintering
    • HIP systems & services
    • Pre- & post-processing technology
    • Powders, powder production and analysis
    • Part manufacturers
    • Consulting, training & market data
    Download PDF
    Share via
    Copy link
    Powered by Social Snap